I am generally a Size 12 but am prepared to adjust depending on designer. I purchased this Sung dress in a size 12 online along with 2 other brands- a Ralph Lauren, size 12 and a Mac Dougall, size 10. The sizing of this dress was very small across the bust. I would have needed a Size 16 to fit my chest. At that point, it would been swimming on my hips. Both other dresses fit well, even surprisingly the Size 10. I liked the dress very much and would have liked to keep it, the color is beautiful but unless you are flat chested, size up!!! Sadly, I'm returning it and am obviously accepting the fact that this designer is not for me.